Renewable energy in the United Kingdom

Renewable energy in the United Kingdom can be divided into the generation of renewable electricity, the generation of renewable heat and renewable energy use in the transport sector.

From the mid-1990s renewable energy began to contribute to the electricity generated in the United Kingdom, adding to a small hydroelectricity generating capacity. The total of all renewable electricity sources provided for 14.9% of the electricity generated in the United Kingdom in 2013, reaching 53.7 TWh of electricity generated. In the second quarter of 2015, renewable electricity penetration exceeded 25% and coal generation for the first time.

Renewable energy contributions to meeting the UK's 15% target reduction in total energy consumption by 2020, in accordance with the 2009 EU Renewable Directive, totalled 5.2% in 2013 as measured in accordance with the methodology set out in the Directive. By 2016 provisional calculations show that the figure had risen again to 8.3 per cent of energy consumption (all sources) coming from renewable sources in 2015.

Interest in renewable energy in the UK has increased in recent years due to new UK and EU targets for reductions in carbon emissions and the promotion of renewable electricity power generation through commercial incentives such as the Renewable Obligation Certificate scheme (ROCs) and Feed in tariffs (FITs) and the promotion of renewable heat through the Renewable Heat Incentive. Historically hydroelectric schemes were the largest producers of renewable electricity in the UK, but these have now been surpassed by wind power schemes, for which the UK has large potential resources.

Renewable heat energy, in the form of biofuels, dates back to 415,000 BP in the UK. Uranium series dating and thermoluminescence dating give evidence to the use of wood fires at the site of Beeches Pit, Suffolk.

Waterwheel technology was imported to the country by the Romans, with sites in Ikenham and Willowford in England being from the 2nd century AD. At the time of the compilation of the Domesday Book (1086), there were 5,624 watermills in England alone, only 2% of which have not been located by modern archaeological surveys. Later research estimates a less conservative number of 6,082, and it has been pointed out that this should be considered a minimum as the northern reaches of England were never properly recorded. In 1300, this number had risen to between 10,000 and 15,000.

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